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A rocket moving vertically -- Find the cosmonaut's weight

  1. Dec 6, 2017 #1
    1. The problem statement, all variables and given/known data
    A rocket during launch from the Earth's surface moves vertically with an acceleration of 22m / s ^ 2. Find the cosmonaut's weight inside the cabin if his mass is 90kg.

    2. Relevant equations
    The problem belongs to "Elasticity. Moving under the action of elastic force" chapter.
    General gravity relating to man = 900N;
    N - G = ma?
    N = m(a+g)
    N = 90*(22+10) = 2880 N

    3. The attempt at a solution
    No idea currently, trying to solve
     
    Last edited: Dec 6, 2017
  2. jcsd
  3. Dec 6, 2017 #2

    PeroK

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    What the definition of weight?
     
  4. Dec 6, 2017 #3

    Orodruin

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    What do you mean ”no idea”? You essentially solved it.
     
  5. Dec 6, 2017 #4
    Just got it, ty anyway
     
  6. Dec 6, 2017 #5

    PeroK

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    There's solving a problem and knowing you've solved it!
     
  7. Dec 6, 2017 #6

    Orodruin

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    I think the two are the same (as long as you got it right). Hence the addition of the ”essentially” - the remaining step being to realise that what was computed was the sought quantity.
     
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